JPH07154731A - Recording method, recording device and editing method - Google Patents

Abstract

PURPOSE:To obtain a recording method, recording device and editing method for reducing labor or time required for editing. CONSTITUTION:Video and/or audio information AR is recorded on a first recording medium 3, a bits of index information PS1-PS60 are recorded on a second recording medium 4, and the editing data of the video and/or audio information AR recorded on the first recording medium 3 are prepared based on a bits of index information PS1-PS60 recorded on the second recording medium 4. Thus, processing for preparing a tape for editing by copying the first recording medium 3 can be omitted and as a result, labor or time required for editing can be considerably reduced.

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. Field of Industrial Application Conventional Technology Problems to be Solved by the Invention Means for Solving the Problems (FIGS. 1 to 4) Actions (FIGS. 1 to 4) Embodiments (FIGS. 1 to 5) Effects of the Invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording method, a recording apparatus, and an editing method, and particularly proposes a recording method, a recording apparatus, and an editing method capable of significantly reducing the time and effort required for editing.

[0003]

2. Description of the Related Art Conventionally, there is offline editing as a method for editing video information recorded on a predetermined recording medium. In offline editing, the video information recorded on the original tape at the shooting site is temporarily copied to another recording tape (hereinafter referred to as the editing tape), and editing data such as editing points is created on the editing tape. A master tape is created based on this edited data. As a result, in offline editing, a desired master tape can be reliably created without accidentally erasing or rewriting important recording information on the original tape.

[0004]

However, in the offline editing, there is a problem that it takes time and labor to copy the information on the original tape to the editing tape.
In addition, pre-roll is indispensable when creating edit data using an editing tape, and it takes time to create the edit data because it takes time to access the target edit point. It was unavoidable.

As one method for solving such a problem,
There is a method in which the information on the original tape is once copied to a recordable disk-shaped recording medium, and the edit data is created using the copy information on the disk-shaped recording medium. In this way, since the editing point can be accessed in a short time, the editing time can be shortened.

However, in order to record all the information on the original tape onto the disk-shaped recording medium, a considerable recording capacity is required as the disk-shaped recording medium, and it is practically difficult to realize a disk-shaped recording medium satisfying this recording capacity. There is a problem. Even when using a disk-shaped recording medium,
It was unavoidable that copying from the original tape to the disk-shaped recording medium took a considerable time as in the case of using the editing tape.

The present invention has been made in view of the above points, and an object thereof is to propose a recording method, a recording apparatus, and an editing method which can reduce the labor and time required for editing.

[0008]

In order to solve such problems, in the present invention, video and / or audio information is recorded on the first recording medium 3 and video and / or audio information is recorded on the second recording medium 4. Record the index information with a reduced amount of information.

Further, in the present invention, the predetermined recording medium 3
In the recording device 1 for recording the video and / or audio information in 4 and 4, the first recording means 16 for recording the video and / or audio information in the first recording medium 3 and the information amount of the video and / or audio information are reduced. Accordingly, there are provided index information forming means 6 and 12 for forming index information, and second recording means 8 for recording the index information in the second recording medium 4, and the first recording medium 3 is provided with video and / or audio information. Is recorded, and the index information is recorded on the second recording medium 4.

Further, in the present invention, video and / or audio information is recorded on the first recording medium 3, and index information obtained by reducing the amount of video and / or audio information is recorded on the second recording medium 4. Then, edit data of video and / or audio information is created based on the index information recorded on the second recording medium 4.

[0011]

If the edit data for editing the video and / or audio information recorded in the first recording medium 3 is created based on the index information recorded in the second recording medium 4, the first data is created. Copying the recording medium 3 to create an editing tape can be omitted, and as a result, the labor and time required for editing can be significantly reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

1 and 2, reference numeral 1 generally indicates a recording / reproducing system used in the video editing system according to the present invention, and includes a video signal S1 and an audio signal S2 picked up by an image pickup section (not shown). In addition to recording on the magnetic tape 3 via the recording system 2, the index information obtained by reducing the information amount of the video signal S1 and the audio signal S2 is recorded on the removable recording medium 4.

The video signal S1 picked up by the image pickup section is input to the analog digital conversion circuit (A / D) 5. The digital video signal D1 digitally converted by the analog digital conversion circuit 5 is sent to the index image creation processing circuit 6 and the frame memory 7, respectively. The frame memory 7 performs a field-to-frame image conversion process for intra-frame recording on the digital video signal D1 and a blocking process for compression. The index image creation processing circuit 6 performs a thinning process on the digital video signal D1 for each predetermined pixel and for each predetermined line to obtain 1/8 of the digital video signal D1.
The index image data D2 having the data amount is created.

The index image data D2 generated by the index image generation processing circuit 6 is recorded by the recording interface 8.
Is recorded on the removable recording medium 4 via. Here, as the removable recording medium 4, for example, a RAM (Random A
ccess memory), a magnetic tape, a disk-shaped recording medium, or the like, and accordingly, as the recording interface 8, a memory controller, a magnetic head, or the like is used according to the removable recording medium 4. The video data D3 output from the frame memory 7 is input to the subsequent compression encoding block 10 and is compressed therein to a predetermined amount of data that can be recorded on the magnetic tape 3.

On the other hand, the input audio signal S2 is converted into a digital audio signal D4 by the analog digital conversion circuit 11.
And the digital audio signal D4 is sent to the audio compression coding block 12 and the error correction code adding circuit 13. The voice compression coding block 12 subjects the digital voice signal D4 to 1/8 compression coding processing, and the resulting compressed voice data D5 is recorded on the removable recording medium 4 via the recording interface 8. .

The error correction code adding circuit 13 adds an error code to the input video data and audio data, and sends this data D6 to the channel coding circuit 14 which follows. The data D6 sent to the channel coding circuit 14 is subjected to recording coding for recording on the magnetic tape 3 in the channel coding circuit 14, and then the recording / reproducing unit 1 in the recording amplifier 15.
At 6, the signal is converted into a signal recordable on the magnetic tape 3.

Here, the recording / reproducing unit 16 and the recording interface 8 are controlled based on drive control signals S3A and S3B sent from the system controller 17, respectively. (These are referred to as main recording information) and the removable recording medium 4 is recorded at substantially the same timing.
In addition, 1/8 compressed video data and audio data (hereinafter referred to as index information) are recorded. The system controller 17 is controlled by the operation signal S4 sent from the user interface 18.

As a result, in the recording system 2, FIG.
As shown in (A), the main recording information of, for example, 60 minutes is recorded in the recording area AR of the magnetic tape 3, and
As shown in (B), each recording area PS1 to PS60 of the removable recording medium 4 has one minute of main recording information,
That is, the index information corresponding to 1800 frames of main recording information is recorded.

Since the index information has a data amount 1/8 that of the main recording information, the index information of 8 frames of the main recording information can be recorded in one frame. As a result, FIG. As shown in the main record information 1800
Index information corresponding to a frame can be recorded in 225 frames (FR1 to FR225). Here, 16 fields (8 frames) of index images are recorded in one frame (FR1, FR2, ... Or FR225) of the index information recording areas PS1 to PS60.

The main recording information thus recorded on the magnetic tape 3 is reproduced by the reproducing system 20. That is, the reproducing system 20 is a magnetic head (not shown) of the recording / reproducing unit 16.
The reproduction data obtained by the above is amplified by the reproduction amplifier 21. The amplified reproduction data is sent to the data extraction circuit 22.

The data extraction circuit 22 generates a data reproduction clock from the reproduction data, extracts predetermined data from the reproduction data based on the data reproduction clock, and sends this data to the channel decoding circuit 23. The channel decoding circuit 23 returns the data coded in the channel coding circuit 14 to the digital data before the channel coding, and sends this data to the error correction processing circuit 24.

Of the reproduced data that has been subjected to error correction processing in the error correction processing circuit 24, the video data D7 is sent to the compression / decoding block 25. On the other hand, the audio data D8 after error correction is output as the audio signal S5 via the digital analog conversion circuit 26.

The video data D7 input to the compression / decoding block 25 is compression-decoded by the compression / decoding block 25, and then input to the subsequent frame memory 27, where de-blocking of the compression / decoding data is performed. Is performed and is output as a video signal S6 via the digital-analog conversion circuit 28. Thereby, in the reproducing system 20, the main recording information recorded on the magnetic tape 3 can be output to, for example, an external monitor.

FIG. 4 shows the structure of an editing system for editing using the magnetic tape 3 and the removable recording medium 4 created by the recording / reproducing system 1. It is built in the body type video tape recorder 30. The magnetic tape 3 obtained by the camera-integrated video tape recorder 30 is loaded into the reproducing device 31, and the removable recording medium 4 is loaded into the editing device 32 having a recording function. As a result, the editing device 32 creates a master tape by copying only desired information among the main recording information recorded on the magnetic tape 3.

At this time, the editing device 32 sequentially displays the index images based on the index information recorded on the removable recording medium 4 on the monitor 33. Therefore, the editor creates edit data (for example, EDL (Edit Decision List)) such as cut-in points and cut-out points based on the index image displayed on the monitor 33.
A master tape is created by editing the main recording information on the magnetic tape 3 based on this edit data.

Here, in the editing device 32, as shown in FIG. 5, the frames FR1, FR2, ..., FR225 included in the respective index data PS1, PS2, ..., PS60 recorded on the removable recording medium 4 are shown. A desired one of them is temporarily stored in the memory and displayed on the monitor 33. Therefore, as shown in FIG. 5C, for example, 16 kinds of index images included in the frame FR1 are displayed on the monitor 33, which allows the editor to record the screen only by viewing the screen of the monitor 33. It is possible to quickly and accurately know the contents of a plurality of pieces of video information, and it is possible to easily select the cut-in point and the cut-out point.

Further, in the editing device 32, FIG.
As shown in FIG. 7, only a specific image of the 16 types of index images can be enlarged and displayed on the monitor 33. In addition to this, when a removable recording medium 4 such as a magnetic tape is used, it takes time to access the editing point. Therefore, the index information recorded on the removable recording medium 4 is previously stored in the hard disk 34 (FIG. 4). It is also possible to read the index information from the hard disk 34 by copying to, and in this way, a desired index image can be accessed in a short time,
Therefore, the cut-in point and the cut-out point can be selected in a much shorter time.

In the above construction, the recording / reproducing system 1 records main recording information consisting of normal video information and audio information on the magnetic tape 3 during recording and also records index information of the main recording information on the removable recording medium 4. To do.

Accordingly, the editor creates edit data based on the index information recorded on the removable recording medium 4, and edits the magnetic tape 3 based on the edit data to create a master tape. As a result, it is not necessary to copy the magnetic tape 3 to make an editing tape, and the time and labor required for editing can be significantly reduced. According to the above configuration, main recording information is recorded on the magnetic tape 3 at the time of recording, index information is recorded on the removable recording medium 4, and edit data is created based on the index information recorded on the removable recording medium 4. By doing so, the labor and time required for editing can be significantly reduced.

In the above embodiment, the magnetic tape 3 is used as the original material for recording the main recording information and the index information, but the present invention is not limited to this, and the original material is, for example, a magneto-optical material. Various recording media such as a disk can be used.

Further, in the above-mentioned embodiment, the case where the index image data D2 is created by performing the thinning process in the index image creation processing circuit 6 has been described, but the present invention is not limited to this, and for example, every predetermined pixel. The index image data may be created by taking an average, and the point is that the index image may be created by reducing the data amount of the original image.

[0033]

As described above, according to the present invention, the video and / or audio information is recorded on the first recording medium and the second recording medium is recorded.
By recording the index information on the second recording medium and creating the edit data of the video and / or audio information recorded on the first recording medium based on the index information recorded on the second recording medium, It is possible to omit making an editing tape by copying the recording medium, and as a result, the labor and time required for editing can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a recording apparatus according to the present invention.

FIG. 2 is a block diagram showing an embodiment of a recording apparatus according to the present invention.

FIG. 3 is a schematic diagram showing a recording state of main recording information and index information.

FIG. 4 is a schematic diagram showing a configuration of an editing system according to an embodiment.

FIG. 5 is a schematic diagram used for explaining an operation when displaying an index image of a removable recording medium on a monitor.

[Explanation of symbols]

1 ... Recording / playback system, 3 ... Magnetic tape, 4 ... Removable recording medium, 6 ... Index image creation processing circuit, 8 ...
... recording interface, 12 ... audio compression coding block, 16 ... recording / reproducing section, AR ... main recording information recording area, PS1 to PS60 ... index information recording area.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location H04N 5/92 7734-5C H04N 5/91 N 7734-5C 5/92 H 8224-5D G11B 27 / 02 C (72) Inventor Kokubun Kisumi, 6-735 Kitashinagawa, Shinagawa-ku, Tokyo Sony Corporation

Claims (3)

[Claims] 1. Index information for video and / or audio information, wherein video and / or audio information is recorded on a first recording medium and the amount of video and / or audio information is reduced on a second recording medium. A recording method characterized by recording. 2. A recording device for recording video and / or audio information on a predetermined recording medium, comprising: first recording means for recording the video and / or audio information on a first recording medium; and the video and / or audio information. Index information forming means for forming index information of the video and / or audio information by reducing the amount of information of the image information, and a second recording means for recording the index information on a second recording medium.
Recording means for recording the video and / or audio information on the first recording medium and the index information on the second recording medium. 3. Index information of the video and / or audio information, wherein video and / or audio information is recorded on a first recording medium and the amount of the video and / or audio information is reduced on a second recording medium. Is recorded, and edit data of the video and / or audio information is created based on the index information recorded in the second recording medium.